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8LVB23.50025S1FW00 B & R Automation

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Internal Product Review

The 8LVB23.50025S1FW00 is a B & R Automation gear motor with a 25:1 gear ratio and 2 gear stages. Nominal output torque of 40 Nm and max output torque of 64 Nm give the assembly strong torque multiplication for demanding drive trains. A 3000 rpm nominal speed and 5.8 A nominal current support efficient servo integration, making the model a highly capable choice for compact geared motion assemblies.

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Product Description:

The 8LVB23.50025S1FW00 gear motor from B & R Automation is delivered as part of the 8LVB Gear Motors series. This unit integrates a servo rotor with a planetary gearbox so that electrical drive commands translate into low-backlash mechanical power for indexing tables, delta pickers, and similar motion axes used in automated assembly lines. Direct coupling of the motor and reducer eliminates alignment hardware, simplifies wiring, and keeps the installation length short enough for tight machine frames.

The mechanical stage contains a 25:1 reduction produced by two gear stages, allowing the shaft to deliver up to 64 Nm without exceeding bearing limits. Under continuous duty, the rated output reaches 40 Nm while the internal motor spins at a nominal 3000 rpm. Radial bearings permit 340 N of side load, and axial thrust up to 450 N can be applied for 30,000 hours of service life. The gearing multiplies the motor’s 1.3 Nm nominal torque and 4 Nm peak torque, allowing compact actuators to handle heavier loads than a direct-drive arrangement of similar frame size.

Electrically, the drive draws a maximum of 20.7 A during acceleration, while steady-state operation requires 5.8 A. A torque constant of 0.23 Nm/A links these currents to mechanical output, and the back EMF produced during regenerative deceleration follows a voltage constant of 13.61 V/1000 rpm. The winding resistance is 0.83 Ω, and the 2 mH stator inductance shapes current loops to filter switching harmonics from the connected servo amplifier. Regenerative deceleration produces electrical energy that the connected drive must manage during braking. The thermal design permits nominal torque to be maintained continuously, while peak torque is available for short acceleration bursts. The electrical requirements are compatible with servo drives that use common 400 V industrial bus systems.

Gear Ratio
25
Gear Stages
2
Max Axial Force (30k H)
450 N
Max Output Torque
64 Nm
Max Radial Force (30k H)
340 N
Maximum Current
20.7 A
Maximum Torque
4 Nm
Nominal Current
5.8 A
Nominal Output Torque
40 Nm
Nominal Speed
3000 rpm
Nominal Torque
1.3 Nm
Stator Inductance
2 mH
Stator Resistance
0.83 Ohm
Torque Constant
0.23 Nm/A
Voltage Constant
13.61 V/1000 rpm

Frequently Asked Questions about 8LVB23.50025S1FW00:

Q: What gear ratio is available on the 8LVB23.50025S1FW00 gear motor?

A: The 8LVB23.50025S1FW00 gear motor provides a gear ratio of 25, suitable for significant speed reduction and increased torque output.

Q: What is the nominal output torque of the 8LVB23.50025S1FW00 gear motor?

A: This model delivers a nominal output torque of 40 Nm, ensuring reliable performance for continuous-duty operations.

Q: What is the maximum current rating of the 8LVB23.50025S1FW00 gear motor?

A: The maximum current for the 8LVB23.50025S1FW00 gear motor is rated at 20.7 A.

Q: What is the maximum axial force supported by the 8LVB23.50025S1FW00 gear motor?

A: The gear motor supports a maximum axial force of 450 N over a 30,000-hour service life period.

Q: What is the nominal speed of the 8LVB23.50025S1FW00 gear motor?

A: The 8LVB23.50025S1FW00 operates at a nominal speed of 3000 rpm.

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